content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.flowable.internal.operators;
  
  import static org.junit.Assert.*;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.*;
  
  import java.util.*;
  import java.util.concurrent.*;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.junit.Test;
  import org.reactivestreams.Subscriber;
  
  import io.reactivex.common.TestCommonHelper;
  import io.reactivex.common.exceptions.*;
  import io.reactivex.common.functions.Function;
  import io.reactivex.common.internal.functions.Functions;
  import io.reactivex.flowable.*;
  import io.reactivex.flowable.processors.*;
  import io.reactivex.flowable.subscribers.*;
  
  public class FlowableWindowWithFlowableTest {
  
      @Test
      public void testWindowViaFlowableNormal1() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          PublishProcessor<Integer> boundary = PublishProcessor.create();
  
          final Subscriber<Object> o = TestHelper.mockSubscriber();
  
          final List<Subscriber<Object>> values = new ArrayList<Subscriber<Object>>();
  
          Subscriber<Flowable<Integer>> wo = new DefaultSubscriber<Flowable<Integer>>() {
              @Override
              public void onNext(Flowable<Integer> args) {
                  final Subscriber<Object> mo = TestHelper.mockSubscriber();
                  values.add(mo);
  
                  args.subscribe(mo);
              }
  
              @Override
              public void onError(Throwable e) {
                  o.onError(e);
              }
  
              @Override
              public void onComplete() {
                  o.onComplete();
              }
          };
  
          source.window(boundary).subscribe(wo);
  
          int n = 30;
          for (int i = 0; i < n; i++) {
              source.onNext(i);
              if (i % 3 == 2 && i < n - 1) {
                  boundary.onNext(i / 3);
              }
          }
          source.onComplete();
  
  
          verify(o, never()).onError(any(Throwable.class));
  
          assertEquals(n / 3, values.size());
  
          int j = 0;
          for (Subscriber<Object> mo : values) {
              verify(mo, never()).onError(any(Throwable.class));
              for (int i = 0; i < 3; i++) {
                  verify(mo).onNext(j + i);
              }
              verify(mo).onComplete();
              j += 3;
          }
  
          verify(o).onComplete();
      }
  
      @Test
      public void testWindowViaFlowableBoundaryCompletes() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          PublishProcessor<Integer> boundary = PublishProcessor.create();
  
          final Subscriber<Object> o = TestHelper.mockSubscriber();
  
          final List<Subscriber<Object>> values = new ArrayList<Subscriber<Object>>();
  
          Subscriber<Flowable<Integer>> wo = new DefaultSubscriber<Flowable<Integer>>() {
              @Override
              public void onNext(Flowable<Integer> args) {
                  final Subscriber<Object> mo = TestHelper.mockSubscriber();
                  values.add(mo);
  
                  args.subscribe(mo);
              }
  
              @Override
              public void onError(Throwable e) {
                  o.onError(e);
              }
  
              @Override
              public void onComplete() {
                  o.onComplete();
              }
          };
  
          source.window(boundary).subscribe(wo);
  
          int n = 30;
          for (int i = 0; i < n; i++) {
              source.onNext(i);
              if (i % 3 == 2 && i < n - 1) {
                  boundary.onNext(i / 3);
              }
          }
          boundary.onComplete();
  
          assertEquals(n / 3, values.size());
  
          int j = 0;
          for (Subscriber<Object> mo : values) {
              for (int i = 0; i < 3; i++) {
                  verify(mo).onNext(j + i);
              }
              verify(mo).onComplete();
              verify(mo, never()).onError(any(Throwable.class));
              j += 3;
          }
  
          verify(o).onComplete();
          verify(o, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void testWindowViaFlowableBoundaryThrows() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          PublishProcessor<Integer> boundary = PublishProcessor.create();
  
          final Subscriber<Object> o = TestHelper.mockSubscriber();
  
          final List<Subscriber<Object>> values = new ArrayList<Subscriber<Object>>();
  
          Subscriber<Flowable<Integer>> wo = new DefaultSubscriber<Flowable<Integer>>() {
              @Override
              public void onNext(Flowable<Integer> args) {
                  final Subscriber<Object> mo = TestHelper.mockSubscriber();
                  values.add(mo);
  
                  args.subscribe(mo);
              }
  
              @Override
              public void onError(Throwable e) {
                  o.onError(e);
              }
  
              @Override
              public void onComplete() {
                  o.onComplete();
              }
          };
  
          source.window(boundary).subscribe(wo);
  
          source.onNext(0);
          source.onNext(1);
          source.onNext(2);
  
          boundary.onError(new TestException());
  
          assertEquals(1, values.size());
  
          Subscriber<Object> mo = values.get(0);
  
          verify(mo).onNext(0);
          verify(mo).onNext(1);
          verify(mo).onNext(2);
          verify(mo).onError(any(TestException.class));
  
          verify(o, never()).onComplete();
          verify(o).onError(any(TestException.class));
      }
  
      @Test
      public void testWindowViaFlowableSourceThrows() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          PublishProcessor<Integer> boundary = PublishProcessor.create();
  
          final Subscriber<Object> o = TestHelper.mockSubscriber();
  
          final List<Subscriber<Object>> values = new ArrayList<Subscriber<Object>>();
  
          Subscriber<Flowable<Integer>> wo = new DefaultSubscriber<Flowable<Integer>>() {
              @Override
              public void onNext(Flowable<Integer> args) {
                  final Subscriber<Object> mo = TestHelper.mockSubscriber();
                  values.add(mo);
  
                  args.subscribe(mo);
              }
  
              @Override
              public void onError(Throwable e) {
                  o.onError(e);
              }
  
              @Override
              public void onComplete() {
                  o.onComplete();
              }
          };
  
          source.window(boundary).subscribe(wo);
  
          source.onNext(0);
          source.onNext(1);
          source.onNext(2);
  
          source.onError(new TestException());
  
          assertEquals(1, values.size());
  
          Subscriber<Object> mo = values.get(0);
  
          verify(mo).onNext(0);
          verify(mo).onNext(1);
          verify(mo).onNext(2);
          verify(mo).onError(any(TestException.class));
  
          verify(o, never()).onComplete();
          verify(o).onError(any(TestException.class));
      }
  
      @Test
      public void testWindowNoDuplication() {
          final PublishProcessor<Integer> source = PublishProcessor.create();
          final TestSubscriber<Integer> tsw = new TestSubscriber<Integer>() {
              boolean once;
              @Override
              public void onNext(Integer t) {
                  if (!once) {
                      once = true;
                      source.onNext(2);
                  }
                  super.onNext(t);
              }
          };
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>() {
              @Override
              public void onNext(Flowable<Integer> t) {
                  t.subscribe(tsw);
                  super.onNext(t);
              }
          };
          source.window(new Callable<Flowable<Object>>() {
              @Override
              public Flowable<Object> call() {
                  return Flowable.never();
              }
          }).subscribe(ts);
  
          source.onNext(1);
          source.onComplete();
  
          ts.assertValueCount(1);
          tsw.assertValues(1, 2);
      }
  
      @Test
      public void testWindowViaFlowableNoUnsubscribe() {
          Flowable<Integer> source = Flowable.range(1, 10);
          Callable<Flowable<String>> boundary = new Callable<Flowable<String>>() {
              @Override
              public Flowable<String> call() {
                  return Flowable.empty();
              }
          };
  
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>();
          source.window(boundary).subscribe(ts);
  
          assertFalse(ts.isCancelled());
      }
  
      @Test
      public void testBoundaryUnsubscribedOnMainCompletion() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          final PublishProcessor<Integer> boundary = PublishProcessor.create();
          Callable<Flowable<Integer>> boundaryFunc = new Callable<Flowable<Integer>>() {
              @Override
              public Flowable<Integer> call() {
                  return boundary;
              }
          };
  
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>();
          source.window(boundaryFunc).subscribe(ts);
  
          assertTrue(source.hasSubscribers());
          assertTrue(boundary.hasSubscribers());
  
          source.onComplete();
  
          assertFalse(source.hasSubscribers());
          assertFalse(boundary.hasSubscribers());
  
          ts.assertComplete();
          ts.assertNoErrors();
          ts.assertValueCount(1);
      }
      @Test
      public void testMainUnsubscribedOnBoundaryCompletion() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          final PublishProcessor<Integer> boundary = PublishProcessor.create();
          Callable<Flowable<Integer>> boundaryFunc = new Callable<Flowable<Integer>>() {
              @Override
              public Flowable<Integer> call() {
                  return boundary;
              }
          };
  
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>();
          source.window(boundaryFunc).subscribe(ts);
  
          assertTrue(source.hasSubscribers());
          assertTrue(boundary.hasSubscribers());
  
          boundary.onComplete();
  
          // FIXME source still active because the open window
          assertTrue(source.hasSubscribers());
          assertFalse(boundary.hasSubscribers());
  
          ts.assertComplete();
          ts.assertNoErrors();
          ts.assertValueCount(1);
      }
  
      @Test
      public void testChildUnsubscribed() {
          PublishProcessor<Integer> source = PublishProcessor.create();
          final PublishProcessor<Integer> boundary = PublishProcessor.create();
          Callable<Flowable<Integer>> boundaryFunc = new Callable<Flowable<Integer>>() {
              @Override
              public Flowable<Integer> call() {
                  return boundary;
              }
          };
  
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>();
          source.window(boundaryFunc).subscribe(ts);
  
          assertTrue(source.hasSubscribers());
          assertTrue(boundary.hasSubscribers());
  
          ts.dispose();
  
          // FIXME source has subscribers because the open window
          assertTrue(source.hasSubscribers());
          // FIXME boundary has subscribers because the open window
          assertTrue(boundary.hasSubscribers());
  
          ts.assertNotComplete();
          ts.assertNoErrors();
          ts.assertValueCount(1);
      }
      @Test
      public void testInnerBackpressure() {
          Flowable<Integer> source = Flowable.range(1, 10);
          final PublishProcessor<Integer> boundary = PublishProcessor.create();
          Callable<Flowable<Integer>> boundaryFunc = new Callable<Flowable<Integer>>() {
              @Override
              public Flowable<Integer> call() {
                  return boundary;
              }
          };
  
          final TestSubscriber<Integer> ts = new TestSubscriber<Integer>(1L);
          final TestSubscriber<Flowable<Integer>> ts1 = new TestSubscriber<Flowable<Integer>>(1L) {
              @Override
              public void onNext(Flowable<Integer> t) {
                  super.onNext(t);
                  t.subscribe(ts);
              }
          };
          source.window(boundaryFunc)
          .subscribe(ts1);
  
          ts1.assertNoErrors();
          ts1.assertComplete();
          ts1.assertValueCount(1);
  
          ts.assertNoErrors();
          ts.assertNotComplete();
          ts.assertValues(1);
  
          ts.request(11);
  
          ts.assertValues(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
          ts.assertNoErrors();
          ts.assertComplete();
      }
  
      @Test
      public void newBoundaryCalledAfterWindowClosed() {
          final AtomicInteger calls = new AtomicInteger();
          PublishProcessor<Integer> source = PublishProcessor.create();
          final PublishProcessor<Integer> boundary = PublishProcessor.create();
          Callable<Flowable<Integer>> boundaryFunc = new Callable<Flowable<Integer>>() {
              @Override
              public Flowable<Integer> call() {
                  calls.getAndIncrement();
                  return boundary;
              }
          };
  
          TestSubscriber<Flowable<Integer>> ts = new TestSubscriber<Flowable<Integer>>();
          source.window(boundaryFunc).subscribe(ts);
  
          source.onNext(1);
          boundary.onNext(1);
          assertTrue(boundary.hasSubscribers());
  
          source.onNext(2);
          boundary.onNext(2);
          assertTrue(boundary.hasSubscribers());
  
          source.onNext(3);
          boundary.onNext(3);
          assertTrue(boundary.hasSubscribers());
  
          source.onNext(4);
          source.onComplete();
  
          ts.assertNoErrors();
          ts.assertValueCount(4);
          ts.assertComplete();
  
          assertFalse(source.hasSubscribers());
          assertFalse(boundary.hasSubscribers());
      }
  
      @Test
      public void boundaryDispose() {
          TestHelper.checkDisposed(Flowable.never().window(Flowable.never()));
      }
  
      @Test
      public void boundaryDispose2() {
          TestHelper.checkDisposed(Flowable.never().window(Functions.justCallable(Flowable.never())));
      }
  
      @Test
      public void boundaryOnError() {
          TestSubscriber<Object> to = Flowable.error(new TestException())
          .window(Flowable.never())
          .flatMap(Functions.<Flowable<Object>>identity(), true)
          .test()
          .assertFailure(CompositeException.class);
  
          List<Throwable> errors = TestCommonHelper.compositeList(to.errors().get(0));
  
          TestCommonHelper.assertError(errors, 0, TestException.class);
      }
  
      @Test
      public void mainError() {
          Flowable.error(new TestException())
          .window(Functions.justCallable(Flowable.never()))
          .test()
          .assertError(TestException.class);
      }
  
      @Test
      public void innerBadSource() {
          TestHelper.checkBadSourceFlowable(new Function<Flowable<Integer>, Object>() {
              @Override
              public Object apply(Flowable<Integer> o) throws Exception {
                  return Flowable.just(1).window(o).flatMap(new Function<Flowable<Integer>, Flowable<Integer>>() {
                      @Override
                      public Flowable<Integer> apply(Flowable<Integer> v) throws Exception {
                          return v;
                      }
                  });
              }
          }, false, 1, 1, (Object[])null);
  
          TestHelper.checkBadSourceFlowable(new Function<Flowable<Integer>, Object>() {
              @Override
              public Object apply(Flowable<Integer> o) throws Exception {
                  return Flowable.just(1).window(Functions.justCallable(o)).flatMap(new Function<Flowable<Integer>, Flowable<Integer>>() {
                      @Override
                      public Flowable<Integer> apply(Flowable<Integer> v) throws Exception {
                          return v;
                      }
                  });
              }
          }, false, 1, 1, (Object[])null);
      }
  
      @Test
      public void reentrant() {
          final FlowableProcessor<Integer> ps = PublishProcessor.<Integer>create();
  
          TestSubscriber<Integer> to = new TestSubscriber<Integer>() {
              @Override
              public void onNext(Integer t) {
                  super.onNext(t);
                  if (t == 1) {
                      ps.onNext(2);
                      ps.onComplete();
                  }
              }
          };
  
          ps.window(BehaviorProcessor.createDefault(1))
          .flatMap(new Function<Flowable<Integer>, Flowable<Integer>>() {
              @Override
              public Flowable<Integer> apply(Flowable<Integer> v) throws Exception {
                  return v;
              }
          })
          .subscribe(to);
  
          ps.onNext(1);
  
          to
          .awaitDone(1, TimeUnit.SECONDS)
          .assertResult(1, 2);
      }
  
      @Test
      public void reentrantCallable() {
          final FlowableProcessor<Integer> ps = PublishProcessor.<Integer>create();
  
          TestSubscriber<Integer> to = new TestSubscriber<Integer>() {
              @Override
              public void onNext(Integer t) {
                  super.onNext(t);
                  if (t == 1) {
                      ps.onNext(2);
                      ps.onComplete();
                  }
              }
          };
  
          ps.window(new Callable<Flowable<Integer>>() {
              boolean once;
              @Override
              public Flowable<Integer> call() throws Exception {
                  if (!once) {
                      once = true;
                      return BehaviorProcessor.createDefault(1);
                  }
                  return Flowable.never();
              }
          })
          .flatMap(new Function<Flowable<Integer>, Flowable<Integer>>() {
              @Override
              public Flowable<Integer> apply(Flowable<Integer> v) throws Exception {
                  return v;
              }
          })
          .subscribe(to);
  
          ps.onNext(1);
  
          to
          .awaitDone(1, TimeUnit.SECONDS)
          .assertResult(1, 2);
      }
  
      @Test
      public void badSource() {
          TestHelper.checkBadSourceFlowable(new Function<Flowable<Object>, Object>() {
              @Override
              public Object apply(Flowable<Object> o) throws Exception {
                  return o.window(Flowable.never()).flatMap(new Function<Flowable<Object>, Flowable<Object>>() {
                      @Override
                      public Flowable<Object> apply(Flowable<Object> v) throws Exception {
                          return v;
                      }
                  });
              }
          }, false, 1, 1, 1);
      }
  
      @Test
      public void badSourceCallable() {
          TestHelper.checkBadSourceFlowable(new Function<Flowable<Object>, Object>() {
              @Override
              public Object apply(Flowable<Object> o) throws Exception {
                  return o.window(Functions.justCallable(Flowable.never())).flatMap(new Function<Flowable<Object>, Flowable<Object>>() {
                      @Override
                      public Flowable<Object> apply(Flowable<Object> v) throws Exception {
                          return v;
                      }
                  });
              }
          }, false, 1, 1, 1);
      }
  }
  